PDB Short entry for 1CQV HEADER TOXIN 11-AUG-99 1CQV TITLE CRYSTAL STRUCTURE OF STAPHYLOCOCCAL ENTEROTOXIN C2 AT 100K TITLE 2 CRYSTALLIZED AT PH 5.0 COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN (STAPHYLOCOCCAL ENTEROTOXIN C2); COMPND 3 CHAIN: A; COMPND 4 SYNONYM: SEC2 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STAPHYLOCOCCUS AUREUS; SOURCE 3 ORGANISM_TAXID: 1280 KEYWDS ENTEROTOXIN, SUPERANTIGEN, ZINC BINDING, IMMUNE SYSTEM, TOXIN EXPDTA X-RAY DIFFRACTION AUTHOR D.KUMARAN,S.SWAMINATHAN REVDAT 4 09-AUG-23 1CQV 1 REMARK LINK REVDAT 3 24-FEB-09 1CQV 1 VERSN REVDAT 2 19-SEP-01 1CQV 1 JRNL REMARK TITLE REVDAT 1 22-AUG-99 1CQV 0 JRNL AUTH D.KUMARAN,S.ESWARAMOORTHY,W.FUREY,M.SAX,S.SWAMINATHAN JRNL TITL STRUCTURE OF STAPHYLOCOCCAL ENTEROTOXIN C2 AT VARIOUS PH JRNL TITL 2 LEVELS. JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 57 1270 2001 JRNL REFN ISSN 0907-4449 JRNL PMID 11526318 JRNL DOI 10.1107/S0907444901011118 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH S.SWAMINATHAN,W.FUREY,J.PLETCHER,M.SAX REMARK 1 TITL RESIDUES DEFINING V-BETA SPECIFICITY IN STAPHYLOCOCCAL REMARK 1 TITL 2 ENTEROTOXINS REMARK 1 REF NAT.STRUCT.BIOL. V. 2 680 1995 REMARK 1 REFN ISSN 1072-8368 REMARK 1 REFERENCE 2 REMARK 1 AUTH S.SWAMINATHAN,W.FUREY,J.PLETCHER,M.SAX REMARK 1 TITL PRELIMINARY X-RAY STUDIES ON TWO NEW CRYSTAL FORMS OF REMARK 1 TITL 2 STAPHYLOCOCCAL ENTEROTOXIN C2 REMARK 1 REF ACTA CRYSTALLOGR.,SECT.D V. 51 1080 1995 REMARK 1 REFN ISSN 0907-4449 REMARK 1 DOI 10.1107/S0907444995003180 REMARK 2 REMARK 2 RESOLUTION. 2.06 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.06 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 12.50 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 15179 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.208 REMARK 3 FREE R VALUE : 0.280 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1865 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 163 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : NULL REMARK 3 B22 (A**2) : NULL REMARK 3 B33 (A**2) : NULL REMARK 3 B12 (A**2) : NULL REMARK 3 B13 (A**2) : NULL REMARK 3 B23 (A**2) : NULL REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.234 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.216 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.153 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 5.858 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.187 ; 0.020 REMARK 3 ANGLE DISTANCE (A) : 0.206 ; 0.040 REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.098 ; 0.050 REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : 0.000 ; 15.000 REMARK 3 PLANAR (DEGREES) : 7.500 ; 7.000 REMARK 3 STAGGERED (DEGREES) : 18.100; 15.000 REMARK 3 TRANSVERSE (DEGREES) : 25.100; 20.000 REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 2.260 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 3.330 ; 3.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.730 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.920 ; 3.000 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1CQV COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-AUG-99. REMARK 100 THE DEPOSITION ID IS D_1000009500. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 17-JUL-97 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 5.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X12B REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9780 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM REMARK 200 INTENSITY-INTEGRATION SOFTWARE : ADSC REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 16187 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.060 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 89.4 REMARK 200 DATA REDUNDANCY : 5.000 REMARK 200 R MERGE (I) : 0.03000 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 33.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.05 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.12 REMARK 200 COMPLETENESS FOR SHELL (%) : 45.0 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.04200 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMEN REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: 1SE2 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 43.30 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.15 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 20% PEG 8000, 0.2M MAGNESIUM ACETATE, REMARK 280 0.1M CACODYLATE AT PH 5.0, VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 291K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 21 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -Y+1/2,X+1/2,Z+3/4 REMARK 290 4555 Y+1/2,-X+1/2,Z+1/4 REMARK 290 5555 -X+1/2,Y+1/2,-Z+3/4 REMARK 290 6555 X+1/2,-Y+1/2,-Z+1/4 REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-Z+1/2 REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 144.57450 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 21.34150 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 21.34150 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 216.86175 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 21.34150 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 21.34150 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 72.28725 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 21.34150 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 21.34150 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 216.86175 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 21.34150 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 21.34150 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 72.28725 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 144.57450 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON REMARK 300 BURIED SURFACE AREA. REMARK 350 REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000 REMARK 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 ASP A 99 REMARK 465 ASN A 100 REMARK 465 VAL A 101 REMARK 465 GLY A 102 REMARK 465 LYS A 103 REMARK 465 VAL A 104 REMARK 465 THR A 105 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 GLU A 1 CG CD OE1 OE2 REMARK 470 LYS A 56 CG CD CE NZ REMARK 470 LYS A 57 CG CD CE NZ REMARK 470 LYS A 59 CG CD CE NZ REMARK 470 SER A 97 OG REMARK 470 LYS A 98 CG CD CE NZ REMARK 470 LYS A 237 CG CD CE NZ REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 GLU A 119 CD GLU A 119 OE2 -0.088 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ASP A 9 CB - CG - OD1 ANGL. DEV. = 7.0 DEGREES REMARK 500 ASP A 29 CB - CG - OD2 ANGL. DEV. = 5.9 DEGREES REMARK 500 VAL A 64 CA - CB - CG1 ANGL. DEV. = 10.2 DEGREES REMARK 500 ASP A 83 CB - CG - OD1 ANGL. DEV. = 8.4 DEGREES REMARK 500 ARG A 134 NE - CZ - NH1 ANGL. DEV. = -3.0 DEGREES REMARK 500 ASP A 209 CB - CG - OD1 ANGL. DEV. = 8.8 DEGREES REMARK 500 ASP A 209 CB - CG - OD2 ANGL. DEV. = -6.9 DEGREES REMARK 500 ASP A 224 CB - CG - OD2 ANGL. DEV. = 6.1 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 ASP A 30 62.89 37.15 REMARK 500 PHE A 44 -82.51 -120.24 REMARK 500 LYS A 59 19.42 92.77 REMARK 500 TYR A 90 -33.54 -130.29 REMARK 500 SER A 96 -100.28 -58.91 REMARK 500 SER A 97 48.07 166.02 REMARK 500 MET A 111 -179.64 -171.78 REMARK 500 SER A 178 -157.08 -151.32 REMARK 500 LYS A 237 -42.06 3.80 REMARK 500 REMARK 500 REMARK: NULL REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A 240 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 9 OD2 REMARK 620 2 ASP A 83 OD1 80.1 REMARK 620 3 ASP A 83 OD2 97.8 51.1 REMARK 620 4 HIS A 118 ND1 127.5 94.4 118.9 REMARK 620 5 HIS A 122 NE2 93.0 151.7 103.7 111.1 REMARK 620 N 1 2 3 4 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: ZNB REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: ZINC IS COORDINATED BY FOUR RESIDUES, OF WHICH REMARK 800 ASP A 9 IS FROM A SYMMETRY RELATED MOLECULE. REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 240 REMARK 999 REMARK 999 SEQUENCE REMARK 999 SIDE CHAIN ATOMS FOR RESIDUES 1,56,57,59,97,98,237 REMARK 999 WERE NOT VISIBLE IN ELECTRON DENSITY MAP REMARK 999 BEYOND CB ATOM DBREF 1CQV A 1 239 UNP P34071 ENTC2_STAAU 28 266 SEQRES 1 A 239 GLU SER GLN PRO ASP PRO THR PRO ASP GLU LEU HIS LYS SEQRES 2 A 239 SER SER GLU PHE THR GLY THR MET GLY ASN MET LYS TYR SEQRES 3 A 239 LEU TYR ASP ASP HIS TYR VAL SER ALA THR LYS VAL MET SEQRES 4 A 239 SER VAL ASP LYS PHE LEU ALA HIS ASP LEU ILE TYR ASN SEQRES 5 A 239 ILE SER ASP LYS LYS LEU LYS ASN TYR ASP LYS VAL LYS SEQRES 6 A 239 THR GLU LEU LEU ASN GLU ASP LEU ALA LYS LYS TYR LYS SEQRES 7 A 239 ASP GLU VAL VAL ASP VAL TYR GLY SER ASN TYR TYR VAL SEQRES 8 A 239 ASN CYS TYR PHE SER SER LYS ASP ASN VAL GLY LYS VAL SEQRES 9 A 239 THR GLY GLY LYS THR CYS MET TYR GLY GLY ILE THR LYS SEQRES 10 A 239 HIS GLU GLY ASN HIS PHE ASP ASN GLY ASN LEU GLN ASN SEQRES 11 A 239 VAL LEU ILE ARG VAL TYR GLU ASN LYS ARG ASN THR ILE SEQRES 12 A 239 SER PHE GLU VAL GLN THR ASP LYS LYS SER VAL THR ALA SEQRES 13 A 239 GLN GLU LEU ASP ILE LYS ALA ARG ASN PHE LEU ILE ASN SEQRES 14 A 239 LYS LYS ASN LEU TYR GLU PHE ASN SER SER PRO TYR GLU SEQRES 15 A 239 THR GLY TYR ILE LYS PHE ILE GLU ASN ASN GLY ASN THR SEQRES 16 A 239 PHE TRP TYR ASP MET MET PRO ALA PRO GLY ASP LYS PHE SEQRES 17 A 239 ASP GLN SER LYS TYR LEU MET MET TYR ASN ASP ASN LYS SEQRES 18 A 239 THR VAL ASP SER LYS SER VAL LYS ILE GLU VAL HIS LEU SEQRES 19 A 239 THR THR LYS ASN GLY HET ZN A 240 1 HETNAM ZN ZINC ION FORMUL 2 ZN ZN 2+ FORMUL 3 HOH *163(H2 O) HELIX 1 1 LYS A 13 GLU A 16 1 4 HELIX 2 2 MET A 21 TYR A 28 1 8 HELIX 3 3 ASN A 70 TYR A 77 1 8 HELIX 4 4 ALA A 156 LYS A 171 1 16 HELIX 5 5 GLN A 210 LEU A 214 1 5 HELIX 6 6 MET A 215 ASP A 219 5 5 SHEET 1 A 3 VAL A 33 VAL A 38 0 SHEET 2 A 3 VAL A 81 TYR A 90 -1 N GLY A 86 O VAL A 33 SHEET 3 A 3 LYS A 108 LYS A 117 -1 N THR A 116 O ASP A 83 SHEET 1 B 4 ASP A 48 ASN A 52 0 SHEET 2 B 4 ASP A 62 GLU A 67 -1 N THR A 66 O LEU A 49 SHEET 3 B 4 LYS A 108 LYS A 117 1 N THR A 109 O LYS A 63 SHEET 4 B 4 VAL A 81 TYR A 90 1 N TYR A 89 O CYS A 110 SHEET 1 C 5 ARG A 140 GLU A 146 0 SHEET 2 C 5 ASN A 130 GLU A 137 -1 N VAL A 135 O THR A 142 SHEET 3 C 5 LYS A 229 THR A 236 1 N VAL A 232 O ARG A 134 SHEET 4 C 5 TYR A 181 GLU A 190 -1 N ILE A 189 O LYS A 229 SHEET 5 C 5 ASN A 194 MET A 200 -1 N TYR A 198 O ILE A 186 SSBOND 1 CYS A 93 CYS A 110 1555 1555 2.51 LINK OD2 ASP A 9 ZN ZN A 240 1455 1555 2.21 LINK OD1 ASP A 83 ZN ZN A 240 1555 1555 2.73 LINK OD2 ASP A 83 ZN ZN A 240 1555 1555 2.17 LINK ND1 HIS A 118 ZN ZN A 240 1555 1555 2.34 LINK NE2 HIS A 122 ZN ZN A 240 1555 1555 2.23 SITE 1 ZNB 4 ASP A 83 HIS A 118 HIS A 122 ASP A 9 SITE 1 AC1 4 ASP A 9 ASP A 83 HIS A 118 HIS A 122 CRYST1 42.683 42.683 289.149 90.00 90.00 90.00 P 43 21 2 8 ORIGX1 1.000000 0.000000 0.000000 0.00000 ORIGX2 0.000000 1.000000 0.000000 0.00000 ORIGX3 0.000000 0.000000 1.000000 0.00000 SCALE1 0.023429 -0.000001 -0.000001 0.00000 SCALE2 0.000000 0.023429 -0.000001 0.00000 SCALE3 0.000000 0.000000 0.003458 0.00000